package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.vo.AttrGroupWithAttrGroupVo;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.service.AttrGroupService;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrGroupEntity> page = this.page(
                new Query<AttrGroupEntity>().getPage(params),
                new QueryWrapper<AttrGroupEntity>()
        );

        return new PageUtils(page);
    }

    public PageUtils queryPage(Map<String, Object> params, Long categoryId) {

        String key = (String) params.get("key");
        QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>();
        if (!StringUtils.isEmpty(key)) {
            wrapper.and((obj) -> {
                obj.eq("attr_group_id", key).or().like("attr_group_name", key);
            });
        }

        if (categoryId == 0) {
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    wrapper);
            return new PageUtils(page);
        } else {
            wrapper.eq("catelog_id", categoryId);
            IPage<AttrGroupEntity> page = this.page(
                    new Query<AttrGroupEntity>().getPage(params),
                    wrapper);
            return new PageUtils(page);
        }
    }

    @Override
    public List<AttrGroupWithAttrGroupVo> getAttrGroupwithattr(long catelogId) {

        QueryWrapper<AttrGroupEntity> queryWrapper = new QueryWrapper<AttrGroupEntity>();
        queryWrapper.eq("catelog_id",catelogId);
        List<AttrGroupEntity> attrGroupEntities = this.baseMapper.selectList(queryWrapper);
        if(CollectionUtils.isEmpty(attrGroupEntities)){
            return Collections.EMPTY_LIST;
        }


        List<AttrGroupWithAttrGroupVo> collect = attrGroupEntities.stream().map(x -> {
            AttrGroupWithAttrGroupVo attrGroupVo = new AttrGroupWithAttrGroupVo();
            BeanUtils.copyProperties(x,attrGroupVo);
            Long attrGroupId = x.getAttrGroupId();
            List<AttrEntity>  attrEntities = this.baseMapper.selectAttrListByGroupId(attrGroupId);
            attrGroupVo.setAttrs(attrEntities);
            return attrGroupVo;
        }).collect(Collectors.toList());

        return collect;
    }

}
